Adding and listing machine.



APPLIUATION HLBD E. 21, 19m

Patented Jam. i3, 1914.

5 SHEETS-SHEET l.

R. E. BBNNER. ADDING AND LLSTING MACHINE. APPLIGAToN yum; man, 1910.

Patented Jan. 137 1914,

BHEETS-BHEET 2.

R. B. BENNBR.

ADDING AND LISTINGVMACHINE. APPLICATION FILED FEB. 21, 1910.

Patented Jan. I3, 1914.

5 SHBETS^-SHEBT 3.

P.i BENNERx ADDING AND LISTING means.

APPLIOATIO! FILM) HELM! 1910.

.Patented Jan, 3, 1914 R. E. BENNER.

ADDING AND LISTING MACHINE.

APPLICATION FILED TERZI, 1910.

1,084,591. Patented Jan. 13, 1911 5 SHEETS-SHEET 5.

" i ooo,

particular set of wheels to come sitions but is merely shifted UNITEDSTATES PATENT (D13-FICE RUSSELL E. BENNER, OF

MACHINE COMPANY, OF

DETROIT, MICIrIGANr` ASSIGNOR TO BURROUGHS ADDING DETROIT, MICHIGAN, ACORPORATION OF MICHIGAN.

ADDING AND LISTING MACHINE.

Specification o Letters Patent. Application filed February 21, 1910,Serial No. 545,037.

Patented Jan. 13, 1914.

machines employing two counters or accumu'lators and a paper carriagelaterally shittable back and forth between two colm'iinar positionsautcmatically.

lnlhitent No. 910,749, issued January 2G,

to Burroughs Adding Machine Company on t'iic invention of Jesse G.Vincent, there is disclosed an adding and listing,` inacliinef havingltwo sets of accumulating \\hcels"together with means whereby the intoplay maybe detei'iiiiiicd by the lateral position of tho paper carriagethough in that machine the paper carriage is not automatically shittedback and forth between two columnar poat will by hand. iii Patent No.919,656, issued April QT, i909, to Burroughs Adding Machine Company onthe joint invention of said Vincent 'and one Nelson llvliite, there isdisclosed an adding; and listing,T machine of the saine general type asthat shown in the before-iiientioned Vincent patent but with atwo-counter oi' duplex accumulator arrangement differing considerablyfrom that disclosed in said Vincent patent and not under control of thelaterally slii'ftable papeiucarriagd Tn Patent No.

` 924,118, issued June S, 190%),to Burroughs Adding Machine Company onthe VJoint invention of said Vincent and myself, there is disclosed anadding and listing machine of theusame general type as shown iii thebefore-mentioned Vincent` and Vincent-lhite patents, buthaviiigincorporated init mechanism whereby the paper carriage is shifted backand forth between two columnar positions automatically, thatI is to sayfirst one way as an incident to operation of the machine and then theother way'as an incident `lo a following` yoperation of the machine.

'lheinachine 4of this 'Tincent-Bcnncr patent has, however, a singlecounter or accumulator only'. f

Now by my present invention l propose to combine in one vmachineautomatic paper cal'- i l i i l l l l l l l l i i l l l l ringei'ecii'irocating means suoli for example as that disclosed in theahoif'e-mentioned Vincent-Benner patent, and a double counter or duplexaccumulator arrangement such as shown in the filiere-mentioned Vincent-White patent, thereby producing a machine in which a single set ofactuators and type arriers will he caused to coperate alteriialely withtwo independently operable sets of adding;l wheels and the amountsalternately accumulated will be alternately printed in two parallelcolumns, all of this taking place automatically as the. machine issuocessi rely operated, c. o. by depressingr amount keys and pulling auope ating handle.

lVhile as stated l aim to combine in one machine the so-called shuttlepaper carriage and the so-cal-led duplex accumulating' mechanism, thefeature'of automatically alternatinul coiiperatii'c relationship betweenthe two counters or accumulator-s and the. common set of actuators isnot necessarily dependent upon the automatic reciprocation of the papercarriage though the invention may liud its chief utility in thecombination including" the latter feature.

ln the :form of embodiment of my invention herein detailed the doublecounter or duplex accumulator arrangement follows quite closely that.disclosed in the beforementioned Vincent-lVhite patent, and the carriagereciprocating mechanism follows quite closely that disclosed iii saidVincent- Bemieipaient and it therefore notI necessary for the presentspecication to extend to all of the particulars of construction andmodes of operation of these mechanisms but reference may be had to saidprior patents in this regard.

Of the drawings which constitute a part of this specification Figure lrepresents in left side elevation a complete adding and listingmachinewaich embodies my present invention in the form above mentioned, theusual in'closing casing' of the machine being omitted and the basecasting and rear panel shown in cross section as well as a number ofcross shafts, supporting rods and pivot studs, and portions of thepapercarriaie and its track being; lorolten away and sactionalizcd. Thecondition of the machine as here represented is Unit which obtains whenan amount has` just been accuniulatcd on the upperone of the two sets ofadding wheels ring aci'zumulations from one and the next ensuingoperation is to accumulate an amount on the lower set of adding wheels.Fig. 2 is a view similar to F ig. l though not embracingas much of themachine, and here the condition is changed to represent that whichobtains when an amount has just been accumulated in the lower set ofadding wheels and in the next ensuing operation an amount is to beaccumulated in the upper set of adding wheels; iig. 3 is a horizontalsection taken on the line 3-3 ot' Fig. 2; Fig. 4 is a. left sideelevation of parts which vappear in plan view in F ig. 3 with certainparts broken away to disclose the relation of other parts shown as suchrelation would exist with the machine in the condition illustrated inFig. 2; Fig. 5 is a view similar to Fig. t but with the omitted parts ofthe latter reta-ined and eertainkparts of Fig. 4 omitted; Fig. 6 showstae machine in rear elevation in a condition corresponding with theillustration in Fig. 1; Fig. 7 is a partial rear elevation with someparts broken away and sectionalized, this view illustrating a conditionof the ma chine corresponding with that illustrated in Fig. 2; Fig. 8 isa View somewhat similar to F'ig. 7 though not ineluding'as many partsand differing further in Showing a changed Relationship of parts due tomanipulation of a certain special key; Fig. 9 is a partial verticalsection and partial right side elevation of the rear lower portion ofthe machine extending fragmentarily to the top of the machine as toembrace the before-mentioned special key; Fig, 10 is a horizontalsection taken substantially on the line 10-10 ot' Fig. 9; and Fig. 11 isa vertical section taken substantially on the line 11%11 of Fig. 10.

The reference numeral G10 designates mental racks mounted in the usualway on the forward ends of levers G11. the latter pivoted on shaft (300and carrying at their rear ends type plates 618.

rlhe reference numeral 918 designates the upper set ot adding pinionsand 916 the lower set of the Vincent-ll'hite patent to cooperate withthe racks 610 for (1) accumulating amounts` independently ot' eachother, 2) heilig independently tiuncd to zero tor sub-total and totalprinting operations; and (3) transferto the other set of pinions. Theseresults are accomplished .is in the VincentVhite construction t um." the.shitting ol a lever 10 tl doesl not as in the /lincent-lllhite tionproject up through the board plate 213l but terminates below the sameguided by a slot in the lower keyboard plate 91:2. struction the forwardposition of this lever adding pinions arranged as in As in theVincent-White coni control o1. pitmen illiand 914 by mugh the lattercqastrucupper lteyas to its upper end (Fig. 1) means adjustment of thepitmen to provide for coperation between the racks 610 and the lowerpinions 916, whereas rearward position ot said lever as to its upper end(Fig. 2) means adjustment of the pltmen to provide for cooperationbetween the said racks and thc upper set of pinions 916. The shitting ofthe said lever from one position to the other is done automatically,according to the present invention, and, in the form of embodiment ofthat invention here detailed, through connection with paper carriagereciprocating means ol"v the character shown in the aforesaidVincent-Benner patent. Thus a reciprocating bar l-t at the back of themachine (see Fig. 6) similar to the bar correspondingly designated insaid Vincent-Ben ner patent, is, for the purposes oi the presentinvention, foru'ied in a widened end portion with a cam-slot 11, and alever 15, pivoted intermediate its ends to a bracket l5 on the backpanel ot the machine.carries at its rear end a roller 15J occupying saidcamslot so that in reciproeations of the bar Hr said lever will bevibrated. As will* be undei-stood by reference to the Vincent-Bennerpatent the. bar 11 is shifted during the back stroke ot' the operatinghandle of the machine`v and consequently said lever 15 will be rockedone wav or the other during such haelt stroke o1 the 'operating handle.It is through connection with this lever that the lever l() is shiftedbut the connection is not a positive and direct one inasmuch as thelever l() is locked forward or back as in the Vincent-flute constructionwhile the operating handlel is out of normal position. Thus arearwardlyextending branch 10 of the lever 10 carries a locking block10b and the familiar vibrating arm S13 a roller 813 adapted to pass downin front or in rear of the block 10b according to whether the lever 10forward or rearward as to its upper v end. In the present instance thesaid block is shown as rounded at its upper end instead of square as inthe Vincent-Ymte construction, such rounding being for the purpose o1easing the operation of shitting the leve;l 10, z'. e., permitting it tostart to shit't before the roller 81S"L entirely clears the upper end otthe block.

lhe lever 15 extends between a pair of arms 16 and 17 also pivotallymounted independently of each other on the bracket 15 (see particularlyFig. 3) and said lever has a widened forward end in which at pointsabove and below each other are fixed oppositely projecting studs i 5latter projecting under the arm 17 and these g' arms being formed withraised edges as shown for the studs to act upon respectively. The arms17 are connected respectively and 15, the l former proJectmg over thearm 1li and thel spring 17a most clearly shown in Figs.

other arm of that lever is connected by a 'leftfor printing in aright-hand column as by spiral springs 16 and 17 18 and 19, the spring16a being connected to an upper portion of the link 1S and the l to alower portion ot' the link 19 l so that these springs act oppositely.The link 18 is slotted longitudinally at its lower `end to receive astud 16 on the arm 1G and the link .19 is slotted at an intermediatepoint to receive-a stud 17b on the arm 17, as 41 and 5. The connected topendent links i links 18 and 19 are both pivotally to one arm of a bellcrank lever 20 and the link 21 with the lever Figs. 1 and 2.

lith the bar 11 19 as clearly shown in in the posit-ion showin inposit-ion of the paper carrialge moved to the the parts would be viewedfrom the front,

the rear `end of the 'lever 15 wllould be lowered inasmuch 'as the lowerend of `the cam- 1 slot 14a is engaged with the roller 15b. This lever15 elevated been shifted the other i is the condition illustrated vinFig. 1, whereas show the rear end' of the as when the bar 14 has way orto the leftas the parts are seen in Fig. 6. The first ellect of theshifting of the lever 15 is to stretch either the spring 16 or thespring 17a according to the direction in which the bar 14e is moving inaccompaniment with the back- Figs. 2, 4 and 5 I ward swing of theoperating handle, for

l under tension,

fof thc bell'crank lever shifted the other during the greater portion ofsuoli movement of the operating handle the roller 813:x is engaged withthe locking block 1t)b so that the lever 1t) cannot shift. However. justas the operating handle arrives home the roller 8,13a clears the block1()b whereupon the stretched spring acts to shift the lever 10 1S or thelink 19 as the case may be, and the bell crank lever Q and link 21. lhenthe lever 15 shifts -from the position shown in Fig. 1 to that shown inFigs. 2,4 and its stud 15c act-s upon the arm 1G to depress the latterand put the spring 1G the stud 15l1 in such case simply moving down awayfrom the arm 1G. Then when the roller 813a passes from in front of the'block 10 `the spring 1G pulls the link 18 down the length ot' the slottherein, thereby shitting the lever rearward as to its upper end. Of'course the rocking 2O in such ease results in the other link 19 beinglowered and i the arm 17 brought into engagement with l the stud d. Thenwhen the lever 15 way its stud 15 elevates l the arm 17,-stretching thespring 17, andl the stud 15c simply moves away from the l arm 1G. Thenthe roller 813 passes from t behind the block 19 the spring 17 pulls upthe link 1S thereby rocking the bell cra-nk 20 and through the link 2lthrowing the l lever 10 forward as to its upper end. Such rocking of thebell Crank elevatey the link 19 thereby bringing the arm 1li again inengagement with the stud 15C.

,lt will be seen that with the above-described construction in theshitting ot' the bar 14 lirst one way and then the other in successiveoperations of the machine. first one setot' pinions and then the otherwill be brought into coperative relationship with the racks (310, sothat amounts set up by depression of the regular keys 291 will be.alternately aet'unmlated on the two sets of pinions and alternatelyprinted in two parallel columns, it being understood that a papercarriage 3 is mounted at' the rear to shift laterally upon a traek 2 andthat said carriage is suitably engaged with said bar 14. As the machineis here shown organized amounts printed in the lett-hand eolumn of thetwo parallel columns will be accumulated in the upper counter andamounts printed in the right-hand column will be accumulated in thelower counter.

To prevent depression of the total key 265 while the lever 10 is beingshifted and to prevent shifting ot said lever when the. total key isdepressed or being depressed. the lever is formed with a branch 10c(Fig. 1) having a widened upper end portion with straight front and rearedges and a` curved top edge, and the total key bell crank lever 227 hasa stud 2978. Then the total key is depressed with the upper end of thelever l() forward as in Fig. l said stud passesI down along the rearstraight edge ol the braut-l1 19, locking said lever in such position`and when the total key is depressed `with the upper end oli the lever inthe rearward position` as in Fig. Q, said stud passes down along thefront. straight edge ot the branch 10. As the lever is swung from eitherposition to the other the rurved top edge of the branch 10C passes underthe stud Q27, preventing depression of the total key.

ln order to steady the pitmen 911 and 911 in the changing of adjustmentsthereof. the shape of the same is Changed somewhat as compared with thatof the pitmen shown in the Vincent-liuto patent and the lever 1t)carries a stud 10d to cooperate with the pitmen. The pitman 914 insteadof merely having a raised edge such as that designated it in theVineent-lVhite patent is formed with an undercut 'portion 'u2 belowwhich said stud 10d passes when the lever 10 is `shitted to throw itsupper arm forward and its lower arm rearward as in Fig. l. The pitnian9111 is formed with a similar undereut port-ion t' below which said studpasses when the lever is thrown the other way or to the position shownin Fig. 2. The pitmen "urther modified in shape to provide fortransverse plane the other. Thus that portion of the pitman 914 whoseupper edge u corresponds with the edge similarly designated in theV1ncent#White patent is extended forward to .d overlap that portionofthe pitman 91stx whose upper edge t' corresponds with the similarlydesignated edge in the YVincentll'hite patent, and the edge u of thepitman fill extends on an upward curve where its bisects that of thebeveled termination ol' the edge z5. The pitman 914 is preferablybeveled from the outer-terminal of the edge u down to the undercutedgcof in order to avoid the possibility of the stud 10d being obstructed bvany contact being obstructed with the pitman 914. Itwill be noted thatthe undercut edge t of the pitman 914'* is of such extent and extends atsuch an angle as to preclude the possibility of the stud 10d by anycontact with this pitman 9l4. ,p

In order to produce double` column printing with successively recordedamounts in horizontal alinement it is essential that there shall be linespacing only in everv other operation of the machine and the Vincent-Benner patent shows an arrangement for suspending the line spacing whenthel carriage moves to the right-'hand position so that an amount havingbeen printed in the left-hand column no line spacin ensues as the handlereturns to norma. -Similar mechanism is shown in the accompanyingdrawingsthe same comprising slide bars or strips 87 and 89 mounted on'the back panel of the machine, the former having jaws 86 embracin theline spacing bail 84 and the strip or iai* 89 having jaws 90 extendingunder the bailr rod. The feed lever 92C (Fig. 1) engages an ear of theslide bar-or strip 89 as usual and the'latter has a beveled 4lug 96(Fig. 7) for engagement with the similar .lug of a coupler piece or dog92 'pivoted to the slide st ip or bar 87 ,and aetuated by a spring 97.-As/ in the case'oithe corresponding coupler pieceor dog intheVincent-Benner` construct-ion there is an undercut or shouldereddownward extension 92 of the coupler piece against which a stud carried'by the reciprocating bar 14 is adapted to act so as to disconnect theslides S7 and S9 when the carriage shifts to the right, which means ashift to the left ot the bar 14 as viewed from the rear. Howei.-according to the present invention such stud is not in iiXed position onthe bar 14l as in the Vineent-Benner construction but is otherwisearranged in the manner and for the purpose, presently' to be described.

Provision is made in the Vincent-Benner construction `tor discontinuingat will the automatic reciprmation of the paper carriage when it isdesired to list only in a sinried at one end of a lever 14b This keystem is gle column and for suoli work the carriage is required to be inthe left-hand one of the two positions it is capable ot occupying whenthe reciprocating mechanism is active. Now by the present inventionprovision is made `tor doing single column work with the carriage in theother or right-hand position also and to this end the means fordisconnecting the paper feed slide bars or strips S7 and S9 by theshitting ofthe bar 14 which accompanies movement ot' the carriage to theright-hand position, may be disabled at will. This is the occasion foradopting a different arrangen'lent than that oi.' a stud such as thatdesignated 14f inthe Vincentlenner construction fixed in position on thebar 14. According to the present construction the stud 14', whichvperforms the function of the similarly desi ated stud in theVincent-Benner construction, is carpivoted upon the bar 14 at 14c anddrawn upward as to its arm carrying said stud 14, bya spiral spring 14dconnectin it to an upper portion of the said bar 14, w ich springnormally holds the other arm o'f said lever against a stop stud 14e onthe har 14 as shown in Fig. 7. Thus the stud 14 is normally in -aposition corresponding to that of the similarly designated studin theVincent-Benner construction, that is to say a-position adapting it tooperate upon the able the line spacing mechanism in the manner describedin said Vincent-Benner patent and as illustrated in Fig. 7. However, byrocking the lever 14 against the stress of the spring 14d the stud 14rcan be disengaged from the vertical shoulder of the coupler piece so asto permit the latter to rengage the lug 96 of the slide bar or strip 89as shown in Fig. 8.- The lower portion of the coupler piece is elongatedto provide an extended under edge so that in such case the stud 14 will,upon movement of the r ciprocating bar 14 tot-he right as viewed fromthea-ear, resume its normal position in line with the vertical shoulderof the coupler piece. The means for rocking the said lever 14b are ofthe following description: A key 25, similar to that correspondinglydesignated in the Vincent-Benner patent, is similarly located andsui-mounts a stem Q6 sliding through the keyboard plates and upheld by aspring 29.

jointed to the forwardlyextending arm et' a lever 25 whoserearwardly-extending arm is jointed to a downwardly-extendiug bent linkQ5". The latter secured to a short rock shaft 25d a bearing on the backpanel of the machine and carrying at its rear end an arm 25e whichterminates in a downWardly-inclined linger Qf as shown in Figs. (5, 7and 8. lVhen the. reciprocating bar 14 is over to the left as journaledin coupler piece or dog 92 to dis.

. at its lower end is jointed toa crank arm 2:3

engagemcnt with the slide viewed from the reario't the machine, av studv14g,at the end .of the lever 14 opposite that where the stud 14! 'islocated, lies over the said finger Qf as shown in Fig. 7. It. followsthat upon depression of the key 25 andV consequent upward rocking of thearm 25e, said finger 25" will wipe under said stud 14.g and rock thelever 14? to the position shown in Fig. S thereby disengaging the studMr from the vertical.shoulderl of the coupler piece 92 and permittingthe latter to resume bar or strip Si). Line spacing can then take placewith the carriage in the right-hand position.

The key besides performing the tunetion above described, serves in thesame way that the correspondingly designated key in the Yincent-Bennerconstruction does, to disable the carriage reciprocating mechanism, thekey stem QG icing slotted at its lower end to embrace a sind on which ispivotcd a lever QS having at its upper end a stud occupying i an obliqueslot in the key stem 26 so that upon depression of the latter the saidlever Q8 will be rocked. As in the Vincent-Benner construction the leverZ8 engages one arm of bell crank lever 50 whose other arm formed as ashield to move into the path of the pawl. ZZand prevent said pawl fromactuating the ratchet wheel 40 and notched disk Q3, the latter beingsecured to the sleeve or hub of' the beveled gear wheel 24 which is i inmesh with' the'beveled pinion 27 on the l crank shaftQT torreciprocating the bar i4. l 1inasmuch, however, as the intention is, asbefore sta-ted, to provide for single column 'work with the carriage inthe righthand poL sition as well as'in the letth and position, theconnect-ions -troni the said,`key 25. unlike those disclosed in theaforesaid Vincent- Benner patent, provide for disablcment of thecarriage reciprocating mechanism when the carriage is in its righthandposition. Thus, the bell crank lever 30 does'not have the branch whichappearsl in said Vincent# Benn-cr patent-- (there designated and whichin this| former construction strikes against the web of the beveled gear19, there by preventing effective depression ot the key 'when thecarriage is in the righthand position. The omission of this branch ofsaid lever obviously provides for the same action in disablement of thecarriage reciprocating mechanism when the carriage is in the rightthcletthand hand position as when it is in position. y'

ln so tar as concerns carriage control 79er sc and line-spacing controlpor Sc, a divi` sional application has been tiled (Serial No. TBZMTJ),Decci'nbcr 5, lfll).

What l clannvis: l. ln a machine of the character tlc-- scribed, thecombination ot a set oi; racks,

means for dittercnt-ially reciprocating the differentially-reciprocating the same,

pinions independently engage-ableflationship -between thev racks andsame, two sets of wheels independently operable by thc racks, and meansfor automatically alternating cooperative relatioin ship between theracks and the two sets of wheels.

2. In a machine of the character described, the combination of a set oditferentially reciprocating the same, two sets of wheels independentlyoperable by the racks, type carriers common to said sets of wheels,printing mechanism, a laterally shiftable paper carriage, and means vforautomatically shittingthe same back and y forth between two columnarpositions and coincidently automatically alternating cooperativerelationship between the racks and the two sets of wheels.

3. In a machine of the character described, the combination of a set ofracks, means for differentially reciprocating the same, two sets ofpinions independently engageable with and discngageablc from said racks,and means for automatically alternating cooperative relationship betweenthe racks and the two sets of wheels. 4. ln a machine of the characterdescribed, the combination of a set of racks, means for two sets of withand disengageable from said racks, type carriers common to said sets ofpinions, printing mechanism, a laterally paper carriage, and means forautomatically shifting the same back and forth between two columnarpositions and coincidcntly automatically alternating coperative re-I thetwo sets of pinions.

5. ln a. machine of the. character described, the combination of a set'4oi racks, means for diiferentiall1 reciprocating the same,- two sets otinions independently engagey ablewith and disengagcable from said rackscontrolling devices for causing both' s'cts o inions to be out ofengagement with the racks during movement of the latter in onedirection, and means for automatically alternating engagement- Yof thetwo sets of pinions with .the racks throughout movement o Latter in theopposite direction.

6. 'In a machine the combination of a seto racks, means fordiierentially reciprocating the same, two sets of pinions independentlyengagea le with -and disengageable from said racks, controlling devicesfor causing both set-s of pinions to be out of engagement with the racksduring movement of the latter'in one` direction, means for automaticallyalternating engagement of the two sets of pinions with the racksthroughout movement of the l` tter in the opposite direction, typecarriers common to the two sets of pinions, printing mechanism, alaterally shiftable paper carracks, means for shiftablc of the characterdescribed,

fthe

ringe, and'means for reciprocating the same by the means for alternatingengagement of the two sets of pinions with the racks.

7. In a machine of the character described, the combination of a set ofracks, means for differentially reciprocating the saine, two sets ofpinions independently engageable with and disengageable from said racks,a shifter for each set of pinions, a controlling member for theShifters, a prime mover, a lockfor preventin operation of saidcontrolling member iiring operation ci the rime mover, and means of ayielding nature or automatically chan ing the adjustment of thecontrollingniem er as a result ol1 an operation of said prime mover.

8. In a machine of the character described,

the combination of a set of racks, means for diferentiallylreciprocating the same, two sets of lpinionei independently engageablewith andA disengageabl from said racks, a shifter for each set ofpinions, a controlling memberfor the Shifters, a prime mover, a lock forpreventin operation of. said controlling member hiring operation of theprime mover, a reciprocatory element adapted to be moved one way andthen the other in successive operations of the prime mover, andconnections of a yielding nature between said element and thecontrolling member.

9. In a machine of the character described, the combination of a set ofracks,l means for differentially reciprocating the same, two sets ofpinions independently engageable with and disengageable from said racks,a shifter foreach set of pinions, a controlling member for the Shifters,a prime mover, a lock for preventing operation of said controllingmemberdnring operation of thc prime mover, a reciprocatory element adapt ed to be moved one way and then the otherl in successive operationsof the prime mover, and duplex. connections of a yielding nature betweensaid element and the' controlling member.` l

10. In a Amachine of the character described` the combination of a setof racks, means for differentially reciprocating the sam,two sets ofpinions independently engagcable with and disengageable from saidracks.. a shifter for cach set ot pinions. ay controlling lever tor theshit'ters, a prim(` mover, a lock for preventing operation of saidcontrolling lever dni-ing operation of the prime mover, a reciprocatoryelement adapted to be moved one way and then the other in successiveoperations of the prinie mover, arms'cngaged with said element forindependent movement thereby in opposite directiolis, opposilelyarranged springs connected to said arms respectively, and eonneclionsbetween said springs and the aforesaid controlling lever.

ll. In a machine of the character described, the combination of a setotrar-lts, means for differentially reciprocatingr the same, two sets ofpinioiig independently rn gageable with and disengageablc from #aidracks, a shifter for each set, of pinions. a controlling lever for theslii'tteis, a primo mover, a lock for preventing operation o't` saidcontrolling lever during operation ot the prime mover, a lever adaptedto be moved one way and then. the other in anccessive operations of theprime niovcr and having oppositely projecting studs, ind. pendentlypivotcd arms engaged by si; studs respectively, links having slotom i.connection with said arms respectively, positely arranged springsconnecting links with said arms respectively, and oi; ating connectionsbetween said links and l controlling lever.

12. In amachine of the character ih, scribed, the combination of a setof rack, means for differentially reciprocating the same, two sets ofpinions independently cngageable with and disengagealde from said`racks, a shifter for each set. ol pinions, f controlling lever for the.f-:hittf a prina mover, a lock for preventing operation nl saidcontrolling lever during operation nl* the prime mover. a lever adaptedto lui moved one way and then the other in snc-- cessive operations ofthe prime mover and .ff

having oppositely projecting studs, independently pivotcd arms engagedby said studs respectively, links having sloti-i1iidpin connection withsaid arms respectively, oppositely arranged springs connecting saidlinks with said arms respectivel a bell crank lever connected to saidlin .s, and a link con nccting said bell crank lever and the controllinglever.

13. In a machine of the character def scribed, thc combination of a setof racks, means for differentially reciprocating 'the saine, two sets ofpinions independently ciigageable with and disengageable .from saidracks, a shifter for each .set of piiiions`v a. controlling member toi'the Shifters, a prime mover, a cani-slotted bar and wnneotions betweenthe same and said prime mover for shifting the bar first one way andthon the other in successive operations of the prime mover, andcontrolling member-shifting means operated through engagement with theCain-slot of said bar. l

14; In a machine of thc character described, the combination of a set ofracks,

means for diiferentially reciprocating the same, two sets of pinionsindependently cn gageable with and discngageable from said racks, ashifter for each set of pinions, a controlling member for the sliitters`a prime mover, a cani-slotted bar and eoiinecti i tween the same andprime moisi for shifting the bar First one wey and then the ,jectingstuds,

Aing studs,

eased by Y ing slot-and-pin connection Wlth said armsI other insuccessive operations of the prime mover, a lever engaged with thecam-slot of the lsaid bar, and ope `ating connections begeen said. leverand the controlling mem- 15. In a machine of the character `described,the combination of a set of racks, means for differentiallyreciprocating the same, two sets of pinions independently engageablewith and disengageable from said racks, a shifter for each set ofpinions, a controlling` lever for the Shifters, a prime mover, acam-slotted bar and connections between the same and said prime'moverfor shifting the bar first one way and then the other in successiveoperations of the prime mover, a lever engaged with the cam-slot of thesaidbar and having oppositely proindependently pivoted arms engaged bysaid studs respectively, links having slot-and-pin connection with saidarms respectively, oppositely arranged springs connecting said linkswith vsaid arms respectively, operating connections `between said linksand the controllinglever and a lock for preventing operation ot t econtrolling lever during operation of the prime mover.

16. In a machine of the character described, the combinationcf a set ofracks, means for diilerentiallyreciprocatingr the same, two sets ofpinions independently cngageable with and disengageable from said racks,a shifter for each set of pinions, a controlling lever for the Shifters,a prime mover, a cam-slotted bar and connections betweenl the same andsaid prime mover for shifting the bar first one way and then the otherin successive operations oflthe prime mover, a lever engaged with thecam-slot of the said bar and having oppositely projectindependentlypivoted arms ensaid studs respectivelyhlinks hav respectively,oppositely arranged springs connecting said links with said armsrespectively, a Ybell crank lever connected to said links, a linlr'connecting said bell crank lever and the controlling lever, and a lockfor preventing operation of the controlling lever during operation ofthe prime mover.

17. In almachinelof the character described. the combination of a set ofracks, means for differentially reciprocating the same, two sets ofwheels independentlyopf erable by the racks, type carriers common tosaid sets oi wheels, printing mechanism, a laterally shiftable papercarriage, line spacing mechanism, and means for automaticallyT shiftingthe same back and forth loetween two columnar positions and coincidentlyautomatically alternatingcooperative relationship between the racks andthe two sets of wheels, and alternating effectiveness and ineectivenesser the line spacingr mechanism.

18. In a. machine of the character 'de scribed, the combination ot a setolf racks, means for diiferentially reciprocating the same, twosets ofpinions independently engageable 'with and disengageablc from saidracks, type carriers common 'to said sets of pinions, printing mecha.fi., a laterally shiftable paper carriagre.v anism, and means forautomatically shifting the same back and Earth between two columnarpositions and coincidently automatically alternating copeativerelationship between the racks and the two sets of pinions, andalternating eifcctiveness and inetfectiveness of the linek spacingmechanism.

19. In a machine ot the character. (le.- scribed, the combination of a.set oi. racks, means for differentially reciprocating the same, two setsof pinions independently engageable 'with `and disengageable from saidracks, ,controlling device for causing both sets of pinions to be ont ofengagement with the racks during movement of the latter -in onedirection, means for automatically alternating engagementl of the twosets of pinions with the racks throughout-movement ot the latter in theopposite direction, type carricrscommon to the two sets of pinions,printing mechanism, 'a laterally shiftable paper carriage, means forreciprocating tli'e same bv the'means for alternating engagement of thetwo si pinicns with the. racks, line-spacing mechanism, and 'means foralternating elle .L'ivcness and incilectiveness thereof.

Q0. In machine ot' the character de scribed, the combination of a set atracks.I means for ditlcroniialii same. two sets ot wl erable by the rac.to said sets otn a laterally shit le paper spacing mechanism. and meansmatically shiftingl said carriage hair a 'Forth between Wo columnarpositions and coincidentlyA` antmratiwdly alte. .ting cooperativerelationsl heir-wen the racks and the two sets of' when and ,alternatingei"- fectivencss and inciter-tiren spacing mechanism, with provisionsfor disabling said carriage-shifting means at will to permit-.singlecolnnni printing.

21. In a machine ot the character described, the combination'oi a set ofracks, means for differentially reciprocating the same two sets ofwheels independcntlj.T op. erable by the racks, type carriers common tosaid sets of wheels. printing mechanism, a laterallT shiftable papercarriage. line spacing mechanism, and means tor automatically shittingsaid carriage back' and forth. between two columnar positions andcoi`nof the line Y e syncing' mech -r cidently automatically alternating.coperative relationship between the racks and the two Sets of'wheels,and alternating eliectivencss and inetfectiveness of the line spacingmechanism, with provisions lor disabling said carriage shifting meansat. will to permit single column printing with the carriage in either`of its two positions and for maintaining the line spacing mechanismeffective under either condition.

22. In a machine of the character described, the combination of a setor' racks, means for diiierentially reciprocating the same, two sets ofwheels independently operable by the raclrs type carriers common to saidsets of wheels, printing mechanism, a laterally shitable saper carriage,and means for automatically shifting the same back and forth between twocolumnar po sition's and coincident-,ly automatically alternatingcoperative relationship between the racks and the two sets of wheels,with provisionqfor disabling the carriage shifting means at will topermit single column printing and registering on one set of wheels only.

In a machine of the character described, the combination of a set ofracks, means for di'erentially reciprocating the same, two sets ofwheels independently operable by the racks, type carriers common to saidsets of wheels, printing mechanism, a laterally shiftable papercarriage, and means for automatically shifting the same back r and forthbetween two columnar positions vand coincldently automaticallyalternating coperative relationship between the racks and the two setsof wheels with provision for disablingr the carriage shifting meanswlien the carriage is in either of its two positions and torcorrespondingly permitting operations of either set of wheels alone.

24. In a machine of the character described, the combination of a set ofracls, means for differentially reciprocating the same` two sets otwheels independently operable by the racks, and means for automaticallyalternating cooperative relationship between the racks and the twoset-sot wheels with provisions for disabling said latter means at will.

ln a machine ot' the character de-` scrilwd. the coml'iination of a setof racks, moans .For differentially reciprocating the same, two .sets otpinions independently cng.igl.ablc with and difscngagcablc from saidrai-lts, a shii'tcr vlor cach set ot pinions` and a controlling memberAtor thc shit'tcrs cugagcd therewith to change their adjustment andharing provisions tor limiting vibration of tho shil'lcrs.

il. ln a machine ot thc character dcscriboil. the combination ol a srl;of racks, moans for rlill'crrnt1allj,f reciprocating (he '.same, twosets of pinions inde cndcntly cnracks, a shifter :for each set ofpinions, the Shifters having upper acting edges and undercut portions;and a controllingr member engaging with the said upper edges of thcshiters to change the adjustmentthereof and having a projection toengage the undercut portions.

27. In amachine of the class described, the combination oldifferentially reciprocatory racks; two sets oi accl'lmulating pinionsindependently engageable with and disengageable from said racks, rockingsupports for the sets ot pinions respectively; a pitman for each supportadapted to enfrage the same on either side of its pivot and; having anupper acting edge and an undercut ortion; and a lever engaging the uppere ges of the pitman to clnmge their adjustment, said lever having a studto engage thc undercut portions. i 28. In a, machine of thecharactcrdescribed7 the combination of a set of racks, means fordilierentially reciprocating the same, two sets of pinionsVindependently engageable with and disengageable from said racks, ashifter for each set of pinions, the Shifters having upper acting edgeson portions overlapping euch other, and a controlling member engagingsuch edges" to change the adjustment of the Shifters.

29. In a machine o the character described, the combination of n. set ofracks, means Yfor differentially reciprocating the same,.typecarrierscommon to said sets of wheels, printing mechanism7 a laterally shiftablepaper carriage, and means for automatically alternating (':opc/rativerelationship between the racks and the two sets of wheels withprovisions t'or disabling said latter means at willwhen the carriage isin either of two columnar positions between which it reciprocates.

30. In a machine ci the character de scribed, the combination of a setof racks, means Yfor dili'erentially reciprocating the sinnetypefcarricrs common to said sets of wheels, printing mechanism, alaterally ,shiitable paper carriage, means for automaticallyreciprocatingr the same, and means for automatically alternatingcopcrative rclag tionship between the racks and the two sets i ot wheelswith provisions for disabling said l latten moans 'at will when thecarriage is in i either ot the two positions between which it is:nltomatically reciprocatcd.

4 ln a machine o'l the character dcscribcd. the combi (ion ol a sot oli'racks, lfnxcans for di'llcrentially rcriprm'aling thc isamc.'typo-carriers common to said .srl of l wheels'. printing' n'wchanisnl.laterally shi'ltahlc paper carriages moans for automat icallyalternating' copcralire relationship gageablc with and disengagca lefrom saidI he, s; e c? Sie' nier-imams :xt Wlll when the careither ofih@ two postmm bi is uutonmtcully recprocutcd. RUSSELL E. BENNER.

which it l'euprocates.

1n u machine of the bclbed, the cmuuinzxu'n of a xuennsfolf dl ci

